An Equal-Level Approach to the Investigation of Multitrait-Multimethod Matrices.

Schweizer, Karl

Applied Psychological Measurement, v15 n3 p307-17 Sep 1991

An equal-level approach is proposed for investigating multitrait-multimethod (MTMM) matrices with respect to other organizational units that contain additional information concerning a MTMM matrix's validity. The approach requires equality in "data level" before coefficients are submitted for evaluation. Disaggregation is central to investigations of convergent and discriminant validity. (SLD)